Next Pacific Storm Slams Northwest Friday, Raises Severe Threat Over Plains, Warm Up Coming To Northeast (NOW INCLUDES VIDEO)

We have yet another push of unseasonably chilly air driving into the Pacific Northwest by Friday as the next powerful Gulf of Alaska storm comes ashore. Prior to the storm’s arrival, we see heat build over the Deserts and by the time we reach Saturday and the storm has already come ashore over Washington, the heat core will get stretched from Southeast California, Arizona and Nevada all the way to the Dakotas. By perhaps as early as Saturday if not Sunday, expect MID-90s all the way up into North Dakota while temperatures are 15 to 25 below normal across the Northwest.

SEVERE WEATHER THREAT ACROSS THE NORTHERN PLAINS THIS WEEKEND

With the strong push of energy and chill dropping out of the GOA and slamming into the wall of heat centred over the Southwest and Great Basin, this only means one thing, while the hot Southwestern air gets projected up into the Dakotas along a southwest jet, this will set the stage for an increase in SEVERE WEATHER potential.

HEIGHTS RISE OVER CHILLY NORTHEAST

As the storm presses east across the northern flank of the country, this sets up a west-east severe risk area with potential focus over the Great Lakes. Underneath, heights rise from west to east as the flow across the nation turns more zonal. This will force height rises over the Northeast too and by Monday I expect 90 degrees from Washington DC to at least Trenton, perhaps Newark and even New York City. I think a slight wildcard may be had over the Northeast/New England as with a high pushing northward into Quebec and Labrador, one must watch for a possible backdoor front which would feed maritime air in and may cut the heat for such cities as NYC and Boston.

Mid next week looks to see a near nationwide ridge, gone is the west and east coast trough but the big question will be, how long does this last? The El Nino pattern is evolving and the summer looks likely to be a progressive one with in-out shots of heat and cool.

This weekend's upper pattern shows the reinforcing NW trough, heat getting forced northeastwards into the Dakotas and this raises the severe risk over the Northern Plains. (Image courtesy of the ECMWF)

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